>> reporter: team obama tells us the president will go after romney on his tax cut plans and his ideas for winding down the war in afghanistan. but in tuesday's debate, it will be audience members who will be asking the questions in the town hall format. >> he's got to be able to go on offense without being offensive to the audience. he's got to go on offense and defend his vision, his path to where he'd take the country in a second term. >> how about a week ago i had a debate, and i did enjoy myself. >> reporter: as for romney, who is energized by the momentum and bigger crowds he's seen since the debate, our debate coach says, keep it up. >> i can't imagine that governor romney would get overconfident, but he needs to keep doing much of the same he did in the first debate. >> reporter: the big face-off at hofstra set for tuesday night. and the campaigns continue to raise cash. the obama campaign has just announced that it has more than 4 million donors this cycle. that's a presidential record, dan and bianna. >> david kerley, thank you. >>> and for much more on tuesday's debate, let'